AT&T iPhone, iPhone 3G, iPhone 3GS owner here. I haven't had T-Mobile since the Sidekick 1 & 2 days. However, the new Nexus One (Google Phone) tempted and forced me into purchasing the phone unlocked. Should be receiving it tomorrow and if I keep it I'll have to switch over to T-Mobile. I don't think I can go day to day without 3G coverage, and the Nexus One only works on AT&T's edge network. Plus, T-Mobile's unlimited plan (without contract) is about $30-40 less than AT&T's. (Love the fact that I don't have to sign a contract here -- I can always hop back onto AT&T when the iPhone 4G gets released)

Anyway, how's the 3G in South Florida... Will it switch on and off from the 3G logo to that ugly Edge logo like crazy? Recently read that T-Mobile is upgrading their 3G speeds this month, and it'll make a major difference. I'm not as concerned with the speed as I am with the coverage, though... as I've never been overly impressed with AT&T's 3G speed to begin with.

Side note: I get little to no coverage at "Landshark" Stadium and it really pisses me off. I'm one of those guys who needs to see scores of other games constantly. So if you can answer the original question as a T-Mobile 3G user + you attend Dolphins games, you can chime in here as well. Thanks. :D